Question

identify the beginning of a sample period for the function

Answer 1

Given:

$f(t)\text{ = 2csc\lparen t + }\frac{\pi}{4})-1\text{ }$

The graph of f(t) is shown below:

From the graph, we can see that

$x=\text{ }\frac{\pi}{4}\text{ is a good start for the period of f\lparen t\rparen}$

Answer: Option D